Pedro R. Torres

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As Internet computing gains speed, complexity, and becomes ubiquitous, the need for precise and accurate time synchronization increases. In this paper, we present a characterization of a clock synchronization network managed by Network Time Protocol (NTP), composed by thousands of nodes, including hundreds of Stratum 1 servers, based on data collected(More)
Haematobia irritans (L.) horn flies recently have immigrated into Argentina from Brazil or Paraguay. Bioassays were conducted with fenvalerate to develop baseline information on pyrethroid susceptibility. Four populations tested in 1994 and 1995 were more susceptible than a laboratory strain of horn fly not exposed to insecticides since 1970, but 3(More)
......................................... Received: 09-06-11 Accepted: 21-02-12 Abstract Peliosis is a very rare benign entity which is characterized by blood fi lled cavities fi lled within solid organs. They occur primarily in the mononuclear phagocyte system although peliosis can also affect organs such as the lungs, pleura, kidneys, adrenal glands and(More)
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